Christie's, Geneva, November 2007

Lot 92 A Charming Ruby Ring, By De Grisogono

Set with a heart-shaped ruby, weighing 5.03 carats, to the pavé-set diamond heart-shaped diamond surround and half-hoop, mounted in 18k white gold
Signed de Grisogono
Accompanied by report no. 050101T dated 06 June 2007 from the GRS GemResearch Swisslab stating that the ruby is of Burmese origin with no indication of thermal treatment